Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share [Table Text Block]

(In thousands, except share and per share amounts)	Three Months Ended March 31,
	2020		2019
Numerator:
Net income attributable to BOK Financial Corp. shareholders	$	62,079	$	110,612
Less: Earnings allocated to participating securities	343		828
Numerator for basic earnings per share – income available to common shareholders	61,736		109,784
Effect of reallocating undistributed earnings of participating securities	—		—
Numerator for diluted earnings per share – income available to common shareholders	$	61,736	$	109,784
Denominator:
Weighted average shares outstanding	70,513,807		71,926,041
Less:  Participating securities included in weighted average shares outstanding	390,122		538,971
Denominator for basic earnings per common share	70,123,685		71,387,070
Dilutive effect of employee stock compensation plans	6,481		17,318
Denominator for diluted earnings per common share	70,130,166		71,404,388
Basic earnings per share	$	0.88	$	1.54
Diluted earnings per share	$	0.88	$	1.54